1 /* ST Microelectronics LIS2DU12 3-axis accelerometer sensor driver 2 * 3 * Copyright (c) 2023 STMicroelectronics 4 * 5 * SPDX-License-Identifier: Apache-2.0 6 * 7 * Datasheet: 8 * https://www.st.com/resource/en/datasheet/lis2du12.pdf 9 */ 10 11 #ifndef ZEPHYR_DRIVERS_SENSOR_LIS2DU12_LIS2DU12_H_ 12 #define ZEPHYR_DRIVERS_SENSOR_LIS2DU12_LIS2DU12_H_ 13 14 #include <zephyr/drivers/sensor.h> 15 #include <zephyr/types.h> 16 #include <zephyr/drivers/gpio.h> 17 #include <zephyr/sys/util.h> 18 #include <stmemsc.h> 19 #include "lis2du12_reg.h" 20 21 #if DT_ANY_INST_ON_BUS_STATUS_OKAY(spi) 22 #include <zephyr/drivers/spi.h> 23 #endif /* DT_ANY_INST_ON_BUS_STATUS_OKAY(spi) */ 24 25 #if DT_ANY_INST_ON_BUS_STATUS_OKAY(i2c) 26 #include <zephyr/drivers/i2c.h> 27 #endif /* DT_ANY_INST_ON_BUS_STATUS_OKAY(i2c) */ 28 29 #define LIS2DU12_EN_BIT 0x01 30 #define LIS2DU12_DIS_BIT 0x00 31 32 /* Accel sensor sensitivity grain is 61 ug/LSB */ 33 #define GAIN_UNIT_XL (61LL) 34 35 #define SENSOR_G_DOUBLE (SENSOR_G / 1000000.0) 36 37 struct lis2du12_config { 38 stmdev_ctx_t ctx; 39 union { 40 #if DT_ANY_INST_ON_BUS_STATUS_OKAY(i2c) 41 const struct i2c_dt_spec i2c; 42 #endif 43 #if DT_ANY_INST_ON_BUS_STATUS_OKAY(spi) 44 const struct spi_dt_spec spi; 45 #endif 46 } stmemsc_cfg; 47 uint8_t accel_pm; 48 uint8_t accel_odr; 49 uint8_t accel_range; 50 uint8_t drdy_pulsed; 51 #ifdef CONFIG_LIS2DU12_TRIGGER 52 const struct gpio_dt_spec int1_gpio; 53 const struct gpio_dt_spec int2_gpio; 54 uint8_t drdy_pin; 55 bool trig_enabled; 56 #endif /* CONFIG_LIS2DU12_TRIGGER */ 57 }; 58 59 union samples { 60 uint8_t raw[6]; 61 struct { 62 int16_t axis[3]; 63 }; 64 } __aligned(2); 65 66 struct lis2du12_data { 67 const struct device *dev; 68 int16_t acc[3]; 69 uint32_t acc_gain; 70 uint16_t accel_freq; 71 uint8_t accel_fs; 72 73 #ifdef CONFIG_LIS2DU12_TRIGGER 74 struct gpio_dt_spec *drdy_gpio; 75 76 struct gpio_callback gpio_cb; 77 sensor_trigger_handler_t handler_drdy_acc; 78 const struct sensor_trigger *trig_drdy_acc; 79 80 #if defined(CONFIG_LIS2DU12_TRIGGER_OWN_THREAD) 81 K_KERNEL_STACK_MEMBER(thread_stack, CONFIG_LIS2DU12_THREAD_STACK_SIZE); 82 struct k_thread thread; 83 struct k_sem gpio_sem; 84 #elif defined(CONFIG_LIS2DU12_TRIGGER_GLOBAL_THREAD) 85 struct k_work work; 86 #endif 87 #endif /* CONFIG_LIS2DU12_TRIGGER */ 88 }; 89 90 #ifdef CONFIG_LIS2DU12_TRIGGER 91 int lis2du12_trigger_set(const struct device *dev, 92 const struct sensor_trigger *trig, 93 sensor_trigger_handler_t handler); 94 95 int lis2du12_init_interrupt(const struct device *dev); 96 #endif 97 98 #endif /* ZEPHYR_DRIVERS_SENSOR_LIS2DU12_LIS2DU12_H_ */ 99
